import axios from "axios";
import {
  ElMessage,
  ElNotification,
  ElMessageBox,
  ElLoading,
} from "element-plus";

import { userStore } from "@/stores";
import { getToken } from "@/utils/auth";
import errorCode from "@/utils/errorCode";
import { tansParams, blobValidate } from "@/utils";
import cache from "@/plugins/cache";
import { saveAs } from "file-saver";

const CancelToken = axios.CancelToken;
const source = CancelToken.source();

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const baseURL = import.meta.env.VITE_BASE_API;

const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: baseURL,
  // 超时
  timeout: 10000,
});

// request拦截器
service.interceptors.request.use(
  config => {
    // 是否需要设置 token
    const isToken = (config.headers || {})?.isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {})?.repeatSubmit === false;
    config.headers["platform"] = "bcemis";
    if (getToken() && !isToken) {
      config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    if (getToken()) {
      config.headers["satoken"] = getToken();
    }
    // get请求映射params参数
    if (config.method === "get" && config.params) {
      let url = config.url + "?" + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (
      !isRepeatSubmit &&
      (config.method === "post" || config.method === "put")
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === "object"
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime(),
      };
      const sessionObj = cache.session.getJSON("sessionObj");
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ""
      ) {
        cache.session.setJSON("sessionObj", requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
        // 预检拦截
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          config.cancelToken = source.token;
          // cancel函数可以不用传参，也可以传入取消后执行的操作，取消后可提示用户需要登录
        } else {
          cache.session.setJSON("sessionObj", requestObj);
        }
      }
    }

    return config;
  },
  error => {
    console.log(error, "error");
    Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  res => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode["default"];
    // 二进制数据则直接返回
    if (
      res.request.responseType === "blob" ||
      res.request.responseType === "arraybuffer"
    ) {
      return res.data;
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        ElMessageBox.confirm(
          "登录状态已过期，您可以继续留在该页面，或者重新登录",
          "系统提示",
          {
            confirmButtonText: "重新登录",
            cancelButtonText: "取消",
            type: "warning",
          }
        )
          .then(() => {
            isRelogin.show = false;
            const UserStore = userStore();
            UserStore.LogOut().then(resp => {
              // window.open("#/login", "_self");
              location.href = "#/login";
            });
          })
          .catch(() => {
            isRelogin.show = false;
          });
      }
      return Promise.reject("无效的会话，或者会话已过期，请重新登录。");
    } else if (code === 500) {
      if (msg !== "Cannot create property 'headers' on boolean 'false'") {
        ElMessage({
          message: msg,
          type: "error",
        });
      }
      return Promise.reject(new Error(msg));
    } else if (code !== 200) {
      ElNotification({
        title: msg,
        type: "error",
      });
      return Promise.reject("error");
    } else {
      return res.data;
    }
  },
  error => {
    console.log("err" + error);
    let { message } = error;
    console.log("message", message);
    if (message === "数据正在处理，请勿重复提交") return;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    } else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    if (message !== "Cannot create property 'headers' on boolean 'false'") {
      ElMessage({
        message: message,
        type: "error",
        duration: 5 * 1000,
      });
    }
    console.log(message);
    return Promise.reject(error);
  }
);

// 通用下载方法
export function download(url, params, filename) {
  downloadLoadingInstance = ElLoading.service({
    text: "正在下载数据，请稍候",
    spinner: "el-icon-loading",
    background: "rgba(0, 0, 0, 0.7)",
  });
  return service
    .post(url, params, {
      transformRequest: [params => tansParams(params)],
      headers: { "Content-Type": "application/x-www-form-urlencoded" },
      responseType: "blob",
    })
    .then(async data => {
      const isLogin = await blobValidate(data);
      if (isLogin) {
        const blob = new Blob([data]);
        saveAs(blob, filename);
      } else {
        const resText = await data.text();
        const rspObj = JSON.parse(resText);
        const errMsg =
          errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
        ElMessage.error(errMsg);
      }
      downloadLoadingInstance.close();
    })
    .catch(r => {
      console.error(r);
      ElMessage.error("下载文件出现错误，请联系管理员！");
      downloadLoadingInstance.close();
    });
}

export default service;

// 使用方法
import request from "@/utils/request";
// 登录方法
export function login(name, pwd, code, uuid) {
  return request({
    url: "/auth/sso/doLogin",
    headers: {
      isToken: false,
    },
    method: "get",
    params: { name, pwd, code, uuid },
  });
}
// 刷新方法
export function refreshToken() {
  return request({
    url: "/auth/refresh",
    method: "post",
  });
}
